#### General QuestionsHow do I program tax rate into my calculator? Where can I purchase register tape? What features do our calculators have? What is the [F CUT 5/4] switch or [DEC] F, 0, 2 button for? What is the [5,4,3,2,1,0 ADD (2)] switch used for? Why do I get 111.1111... when I calculate 100+10%? Why do I get the wrong answer when doing a percent calculation? What tests are calculators permitted for? How do change the currency rate? How do I perform a currency conversion? What is an overflow error? What is a Round Number Calculation? What is the [MU] key used for? Why aren't powers/exponents being calculated properly when I use the [EXP] key? What calculators can be used for ACT or SAT? How to change the currency rate on DF320TM or MS300M? #### PrintingWhich ink ribbon should I use for my Calculator? What printing calculator performs time calculations? What is the purpose of the GT Key? After adding some numbers an "E" or "P" appears on the display. What do I do? Why do I have problems printing with my thermal printing calculator (DR-T120/DR-T220)? How can I load paper into my HR-8TE calculator? How do I set time and date on DR-T120/DR-T220? #### GraphingHow do I connect my CFX9850, FX9750, Algebra FX2.0, FX7400 to my computer? How do I connect my FX9860 to the computer? How do I enter sexagesimal (degrees-minutes-seconds) value on FX9750G / CFX9850G series graphing calculators? I keep getting a low battery indicator, even though I recently replaced the batteries. When I turn the calculator on I see a dark (or very faint) screen. Why do I keep getting an error message when I try to perform arithmetic or trigonometric calculations? Is there any supplementary material for the graphing calculators? Logarithm of a number to an arbitrary base. Is it possible to accomplish time calculations with my calculator? Is there anything I need to remember when performing BASE-N and logical operations? How do you take the 5th root of a number (or any root higher than 3)? How can I put a matrix into reduced row echelon form on FX9750G / CFX9850G series? How do I generate random numbers on FX97xx / FX98xx / CFX98xx calculators? How do I do exponential regression in the form y=ab^x? #### Data CollectorWhat probes will work with my EA100 or EA200? What software is needed to use the EA200 EA100 Data Collector? #### VistaVista Compatibility #### ScientificAfter performing a sequence of calculations in FX115MS, when I attempt to store the answer in memory, the value changes to something else altogether. What are the various modes for (using the [MODE] key)? Can our scientific calculators convert between degrees, radians, and grads? What do the letters V.P.A.M. stand for? What do the letters S-V.P.A.M. stand for? Logarithm of a number to an arbitrary base. What is the calculation priority sequence that I need to keep in mind when performing a calculation? Is it possible to accomplish time calculations with scientific calculators? How do I enter hexadecimal numbers on FX115MS? Is there anything I need to remember when performing BASE-N and logical operations? When solving mathematical expressions on FX115MS, it does not allow me to input a value for a certain variable. Using the example on page E-5 of User's Guide 2, I am not prompted for B. How do I return my FX-115W to its default modes? My FX115ES or FX300ES gives a fraction as an answer. How do I switch to decimal? Why do I get incorrect answers with problems involving mixed fractions on FX115ES/FX300ES? #### ClassPad 300/330How is the ClassPad different from a conventional graphing calculator? Can I operate the ClassPad in the same way as a conventional graphing calculator? Can the ClassPad use programs that were created for other Casio graphing calculator models? Can I connect the ClassPad to a personal computer? Can I connect the ClassPad to the Data Analyzer EA-200? How large is the memory capacity of the ClassPad 300? How can I save the battery power of my ClassPad? When trying to print a program listing, only the first page is printed. How can I print the complete program?
If you don't see a question that pertains to your situation, contact us by going here.
**How do I program tax rate into my calculator?** Non-printing models (also applies to HR-8TE printing calculator):
1. Press [AC] 2. Hold [SET/%] key for about 2 seconds 3. Press [TAX+] 4. Input the tax rate 5. Press [SET/%]
Printing models (except HR-8TE):
1. Have calculator in "print" mode 2. Press [CA] 3. Hold [SET/%] key for about 3 seconds 4. Input the tax rate 5. Press [TAX+] 6. Press [SET/%] ^Top **I am having a problem registering the ClassPad 300, it keeps telling me my product key is wrong.** Enter only the numerals, not the letters. ^Top **What features do our calculators have?** The attached chart shows comparisons of the different calculator models. This includes graphing, scientific and printing calculators. download the chart here ^Top **What is the [F CUT 5/4] switch or [DEC] F, 0, 2 button for?** The HR-8TE/HR-8TM have a [DEC] key with F, 0, 2, and 5/4 over it, while many other calculators models have a switch labeled [F CUT 5/4]. The button or switch can control rounding off to a certain number of decimal places. F is floating point (no F indicator on screen), 0 rounds off to 0 places after decimal point, and 2 rounds off to 2 places after decimal point. The 5/4 applies to either the 0 or 2 modes, and describes the type of rounding off that is performed. The calculator will round down if the digit after the one you are rounding to is 4 or lower, and round up if the digit is 5 or higher. ^Top **What is the [5,4,3,2,1,0 ADD (2)] switch used for?** This switch is used to determine how many decimal places your answer is displayed in. ADD (2) is often used for monetary calculations, so that it is not necessary to enter the decimal point. It is automatically placed two decimal places from the end for cents. For example, entering 123 will display as 1.23. ^Top **Why do I get 111.1111... when I calculate 100+10%?** This is a markup on price procedure. The formula is as follows: Markup%=(Markup Price-Cost)/(Markup Price) ^Top **Why do I get the wrong answer when doing a percent calculation? ** Make sure that you are following the correct procedure. Adding 10%: 200 [×] 10 [%] [+] Subtract 10%: 200 [×] 10 [%] [-] ^Top **What tests are calculators permitted for?** AP Calculus requires a graphing calculator. Any graphing or scientific calculator is permitted on the following as long as it does not have a QWERTY keyboard, electronic writing pad or a pen-input/stylus-driven interface: PSAT/NMSQT, SAT I SAT II Math, IC & IIC AP Statistics (graphing expected) AP Chemistry AP Physics See www.collegeboard.com for more information. For the GED, the FX-260Solar is suggested. ^Top **How do change the currency rate?** When you press the [M/EX] key, it toggles between conversion mode and memory mode. You will see "EXCH" on the display when in conversion mode. C1, C2, and C3 are three conversion rates. C1 is your home country currency, and so it is always set to 1. C2 and C3 are rates for two other countries, which you can change. For example, if you want to set a conversion rate of $1 to 0.95 euros, here is what you would do (using C1 for US dollars and C2 for euros): 1. Press [AC] 2. Hold [SET/%] for about two seconds until "SET" appears 3. Press [C2] to select currency 2 4. Input the conversion rate (0.95) and then press [SET/%] to store it in memory You can check the currently set rate at any time by pressing [AC] and then [C2]. ^Top **How do I perform a currency conversion?** If you want to convert 100 euros to US dollars, you would do the following (assuming you are using C1 for US dollars and C2 for euros): 1. Press [AC] 2. Enter 100 and then press [C2] 3. Press [C1] to convert to dollars 4. To convert back to euros again, press [C2] You can also perform a currency conversion within a calculation. How much in US dollars would five items selling at 100 euros cost? 1. Press [AC] 2. Enter 5 [×] 100 and then press [C2] 3. Press [C1] [=] ^Top **What is an overflow error?** Whenever the integer part of a calculation result is longer than the maximum number of digits that the calculator can display, you will receive an Overflow Error. The result will be presented as a rounded number. (Please refer to the question "What is a Round Number Calculation" for more information.) ^Top **What is a Round Number Calculation?** Round Number Calculation occurs during an overflow error. For example (on an 8 digit calculator): 99,999,999 x 123 would give the result E 122.99999. The round number of the result is the display value x 100,000,000, which in this case is 12,299,999,000 (the actual answer would be 12,299,999,877). You can press [C] to clear the error and continue the calculation. ^Top **What is the [MU] key used for?** The [MU] key is used for markup. Here is an example of the markup function. If the purchase price of an item is $120 and the profit rate is 25%, what would the selling price and profit be? Enter the following: 120 [MU] 25 [%] (result 160) [=] (result 40) The selling price would be $160 and the profit would be $40. To clarify further, the profit rate is relative to the selling price, meaning the percentage of the selling price that is profit. In the example above, the selling price (as computed by the calculator) is $160, so the profit rate of 25% gives a profit of $40. Before performing the calculation, we did not know what the selling price would be, just that the purchase price of $120 should be 75% of that unknown amount (as 100% - 25% = 75%). To look at it another way, we are asking the calculator to tell us the number that $120 is 75% of. $160 is that number, and then 25% of that (the profit) is $40. ^Top **Why aren't powers/exponents being calculated properly when I use the [EXP] key?** The [EXP] key is used for scientific notation, not for entering powers. It is the same as saying "times 10 to the power of". Whatever number is entered immediately after that is the power that 10 is raised to. To raise a number to a power, use the [^] key. For example, let us say you want to enter 6 to the 4th power. The proper way to enter this would be: [6] [^] [4] The result would be 1,296. If you instead entered [6] [EXP] [4], then this would be interpreted as 6×(10^4), or 6×10,000, which would be 60,000. ^Top **What calculators can be used for ACT or SAT?** You can go to the following page for information on what calculators are acceptable for ACT: http://www.actstudent.org/faq/answers/calculator.html The page doesn't specify which models are acceptable, although it does specify some models that are not acceptable. For the most part, it presents guidelines as to what types of functions would not be acceptable. Similar information regarding calculators that are acceptable for SAT can be found at the following page: http://www.collegeboard.com/student/testing/sat/testday/calc.html ^Top **How to change the currency rate on DF320TM or MS300M?** These calculators use a slightly different procedure compared to other Casio calculators. Up to seven conversion rates can be registered. Each one has a name, such as € -> $. The rate that you specify here would be from the first currency to the second, but conversions can be done in both directions. For example, if you want to set a conversion rate of 1 euro to 0.93 US dollars, here is what you would do (using C1 for euros and C2 for US dollars): 1. Press [AC] 2. Hold [RATE SET/%] for about two seconds until "SET" appears 3. Press [C2] to select currency 2 4. Press [+] repeatedly to select the currency name (such as € -> $) 5. Input the conversion rate (0.93) and then press [RATE SET/%] to store it in memory ^Top **Which ink ribbon should I use for my Calculator?** Download this file to to find compatible ink ribbons. NOTE: Some printing calculators may include an IR-30 ink roller. This is installed at the factory for test purposes. If you have an IR-30 in your calculator, then you should purchase IR-40 as a replacement. ^Top **What printing calculator performs time calculations?** The PR420A is the only recently available printing calculator that has this feature. ^Top **What is the purpose of the GT Key?** Whenever the [=] key has been pressed, the result will be stored into the Grand Total Memory. The [GT] key is to recall the Grand Total Memory. Its function is similar to the [MR] key, in the sense that both are used for recalling memory contents. Please note that the GT Memory will be cleared by pressing the [AC] key in most of our calculators. For certain models, it can only be cleared by pressing the [GT] key twice. ^Top **After adding some numbers an "E" or "P" appears on the display. What do I do?** First, check the batteries, and ensure there is not a paper jam in the printer. If both are fine, then while the calculator is in the "Print" mode, press the [CA] (or [AC]) button 20 times consecutively to clear out memory buffers. Try some numerical calculations, and if the problem persists, repeat pressing the [CA] button 20 times. If the problem still persists, then the calculator may require service. ^Top **Why do I have problems printing with my thermal printing calculator (DR-T120/DR-T220)?** Thermal printing calculators such as the DR-T120 and DR-T220 do not use ink. Instead, they require that you use thermal paper. If you attempt to use standard (not thermal) paper with one of these models, then you will not be able to print. Thermal paper is heat-sensitive. Printing is accomplished when the print head uses a heating element to heat the paper and create the printing, rather than using an ink roll or an ink ribbon. Standard paper is not heat-sensitive, so when the print head passes over it and heats it, there is no reaction from the paper, and therefore nothing appears on the paper. Thermal paper can be obtained from most office supply stores. Usually 2 1/4" or 58mm thermal paper is used (standard size). ^Top **How can I load paper into my HR-8TE calculator?** Slide off the upper cover of the calculator, and cut across the paper roll to form a clean end. If you are mounting the roll externally (outside of the back of the calculator), then look for a slot in the rear of the calculator, which will accept the paper. Feed the end of the paper through the rear slot, and then into the internal feed slot, and hold the [FEED] key. After that, you can flip the arm back to mount the roll and replace the upper cover. If you want to place the roll inside of the calculator, then you need to feed from the bottom of the roll into the internal feed slot, and hold the [FEED] key. After you are finished, replace the upper cover. Although this procedure is for the HR-8TE, it should be applicable to other HR-8 variations, such as the HR-8L and HR-8TM ^Top **How do I set time and date on DR-T120/DR-T220?** Example: March 15, 2008, 10:30 AM 1. Press [CA] 2. Press [TIME] 3. Hold down [%] for about 2 seconds 4. Press 103003152008 5. Press [TIME] 6. Press [TIME] ^Top **How do I connect my CFX9850, FX9750, Algebra FX2.0, FX7400 to my computer?** These calculators use the FA-123 software, which can be downloaded from: http://world.casio.com/edu/resources/fa123/fr_index.html An SB-155 cable is needed to connect to the 9-pin serial port of a computer. This may be obtained from one of our parts distributors. A package called FA-123USB contains the software along with a USB cable. This package may be ordered from our Direct Sales Dept. at 800-836-8580. ^Top **How do I connect my FX9860 to the computer?** This calculator includes a USB cable and the FA-124 software. ^Top **How do I enter sexagesimal (degrees-minutes-seconds) value on FX9750G / CFX9850G series graphing calculators?** To enter a value in sexagesimal (degrees-minutes-seconds) format, press [OPTN] [F6] [F5]. Above the [F4] key, you should see °'". Use the [F4] key to enter the value. So, to enter 12 degrees 34 minutes 56 seconds, you would enter: [1] [2] [F4] [3] [4] [F4] [5] [6] [F4] This will appear on the display as 12°34°56° but it is treated as 12°34'56". After performing a calculation, you can view the result in sexagesimal format. The [F5] key should appear as °'" with an arrow over it. Press this key to change the answer to sexagesimal format. For example, if your answer is 59.375 and you press [F5], it will then be displayed as 59°22'30". ^Top **I keep getting a low battery indicator, even though I recently replaced the batteries.** 1.Are you using the type of battery that is specified for your calculator model? See the user documentation that came with your calculator for details about its power requirements. 2.Replace all batteries with a full set of new ones. 3.If any of the above is the cause of your problem, make a separate record of memory contents as required, and then correctly load new batteries. 4.If the above are not the cause of your problem, contact your dealer or authorized CASIO Service Center. FX7700GB(US), FX8700GB(US), FX7000G(A) users: You must specifically use CR2032 batteries. If you are not using that specific battery you may be using a low drain battery. Our calculators require a high drain battery. Make sure that the positive (+) side of the battery is facing up, so you can see it. Installing the battery upside-down results in poor contact and shorting, which causes the battery to run down prematurely. You'll also want to check the bottom side of each battery there are three contacts on the bottom plus one contact on the side. Gently pull up on each of the bottom contacts and pull out the one on the side. Make sure that the side contact is not touching the bottom side of the battery, this causes a short in that battery and may cause the low-battery indicator to come on. If the problem persists try resetting the calculator*. If this does not solve the problem then you may need to have the calculator serviced. * Resetting the calculator erases all programs and variable memories. ^Top **When I turn the calculator on I see a dark (or very faint) screen.** The contrast setting may need adjustment. The method you should use to adjust contrast depends on your calculator mode.
FX-6300G, FX-7000G(A), FX-7700GB(US), FX-8700GB(US): Press the [MODE] key, and then use the left and right keys to adjust contrast. [left] cursor key: Reduces contrast. [right] cursor key: Increases contrast.
FX-7300G, FX-7450G, FX-7400G PLUS, FX-7700GE, FX-9700GE, CFX-9850G Series, etc. Press the [MENU] key, select the [CONT] icon, and then use the [left] and [right] cursor keys to adjust contrast.
CFX-9800G Select the [OPTIN] icon, and then enter the color contrast adjustment mode. Next, use the [left] and [right] cursor keys to adjust contrast.
ALGEBRA FX Series From the [MENU] screen, select the [System] icon and then press [F2] key to enter the contrast adjustment mode. Next, use the [left]and [right] cursor keys to adjust contrast. ^Top **Why do I keep getting an error message when I try to perform arithmetic or trigonometric calculations?** The error messages should indicate what the problem is. See the error message list in your calculator's user's guide for more information. For example:
**Ma ERROR or Math ERROR** Cause: The calculation result is outside of the allowable calculation range or you are trying to perform an illegal mathematical operation (such as division by zero). Action: Check your input values and adjust them to allow the calculation result to be within the allowable range. If you are using memory for your calculation, make sure that you check the memory value.
**Syn ERROR or Syntax ERROR** Cause: The calculation expression is the wrong syntax, or the program you are using contains a syntax error. Action: Press the or key to display the location of the error, and correct it.
**Stk ERROR or Stack ERROR** Cause: The calculation you are performing has caused the capacity of the numeric stack or the command stack to be exceeded. Action: Simplify your calculation expression. You could also split your calculation expression into two or more parts and execute the parts separately.
**Mem ERROR** Cause: You executed a matrix, graphing, or some other operation that caused remaining memory capacity to be exceeded. Action: Delete memory data you no longer need. Make sure that the number of variables used in your expression does not exceed the number of variables that are available. Other error messages may appear to let you know that a calculation you are trying to perform is not compatible with your current mode, angle unit, display, or other setting. If this happens, check the setup of your calculator and try again. ^Top **Is there any supplementary material for the graphing calculators?** Here are two resources that discuss examples of applications that our calculators may be used for. * __College Algebra and Trigonometry Graphing Calculator Investigations__, Dennis C. Ebersole * __Technology Resources Manual for Casio Graphing Calculators Calculus__, Addison-Wesley Vol. 2 ^Top **Logarithm of a number to an arbitrary base.** Logarithms in base 10 (common logarithm) and e (natural logarithm) can be calculated directly using the keyboard. But if someone wants to calculate a logarithm in any other base, he has to convert this logarithm to a logarithm in base 10 using the following equation logba = log a / log b (log a is the log of a in base 10, and, log b is the log of b in base 10 ) The correctness or validity of this equation can be verified simply. In this way then it is possible to calculate the logarithm of a number to any base with Casio's scientific/graphical calculators . Note: With a graphic calculator such logarithms can also be drawn. With the following models, you can specify base b using the syntax "log(b,a)". The models: ClassPad300, RM-ClassPad, ClassPad Manager ^Top **Is it possible to accomplish time calculations with my calculator?** Yes, it is possible. The sexagesimal base number is based on the number 60. This base number is used for time and angle measurement. Time measures (1 hour 60 minutes, 1 minute=60 seconds) Casio scientific calculators can carry out time calculations as well as angle calculations. The following are calculations using the Algebra FX 2.0(Plus).
**Examples: To convert the decimal value 2.258 to a sexagesimal value** Input the value 2.258 and press the buttons as follows: [OPTN] [F6] [F3] (ANGL) [5] (>DMS) [EXE] Displayed Result: 2°5'28.8" (2 hours 15 minutes and 28.8 seconds)
**Time calculation with sexagesimal values:** 5 hours 34 minutes and 48 seconds are to be added to 8 hours 16 minutes and 51 seconds. Press the buttons as follows: [5] [OPTN] [F6] [F3] (ANGL) [4] (°'") [3] [4] [F3] (ANGL) [4] (°'") [4] [8] [F3] (ANGL) [4] (°'") [+] [8] [F3] (ANGL) [4] (°'") [1] [6] [F3] (ANGL) [4] (°'") [5] [1] [F3] (ANGL) [4] (°'") [EXE] Displayed result as decimal value: 13.86083333
**The result can be converted into sexagesimal value.** Press the buttons as follows: [OPTN] [F6] [F3] (ANGL) [5] (>DMS) [EXE] Displayed Result: 13°1'39" (13 hours 51 minutes and 39 seconds) ^Top **Is there anything I need to remember when performing BASE-N and logical operations?** Yes. In addition to decimal values,calculations can be performed using binary, octal and hexadecimal values. Calculation results in the BASE-N Mode are always displayed using the currently selected number system. You can change the number system setting to change a value to another number system. You can also perform negative value calculations and logical operations.
**Note:** When inputting hexadecimal values, use the keys marked with red or green alphabetic letters to input A, B, C, D, E, and F. In this case, you do not need to press the [ALPHA] key before pressing the letter key. **Converting from BASE-N to Decimal ** Number system | Base | example (Decimal number 28) | Result | **Binary** | 2 | 1x 24 + 1x 23 + 1x 22 + 0x 21 + 0x20 | 11100 | **Octal** | 8 | 3x 81 + 4x 80 | 34 | **Decimal** | 10 | 2x 101 + 8x 100 | 28 | **Hexadecimal** | 16 1x 161 + 12x 160 | 1C | The following are calculations using the ALGEBRA Fx2.0 (PLUS). Operation on other scientific calculator models (FX1.0 Series, cfx-9850G Series, fx-9750G Series, etc.) is similar.
**Example:** To convert the decimal value 28 to its binary equivalent. 1.On the RUN Mode SETUP screen, specify decimal for the MODE setting. [CTRL] [F3](SET UP) [F2](Dec) [ESC] 2.Input the decimal value 28. [2] [8] [EXE] 3. Specify binary as the desired number base. [F3](DISP) [3](>Bin) [EXE] Displayed Result: 11100
**Logical operations** Logical operations display the results of the bitwise logical product (and), logical sum (or), exclusive logical sum (Xor,Exor), and exclusive negative logical sum (Xnor). In the case of negative binary, octal, and decimal values, the two's complement of the binary equivalent of the value is taken and then result is returned to its original number base value. With the decimal number base, negative values are displayed with a minus sign.
**Truth Table** A | B | A And B | A Or B | A Nand B | A Nor B | A Xor B | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | A Nand B is equivalent to: Not (A and B) A Nor B is equivalent to: Not (A or B) A Xor B is equivalent to : (A Or B) And (Not(A)Or Not(B))
**Examples:** To take the bitwise Or and Xor of the hexadecimal values 19 and 1A, and convert the results to binary values.
**Or Operation:** 19 Or 1A 1. On the RUN Mode SETUP screen, specify hexadecimal for the MODE setting. [CTRL] [F3](SETUP) [F3](Hex) [ESC] 2. Input the hexadecimal value 19. [1] [9] 3. Input the logical operator. [F2](LOGIC) [4](Or) 4. Input the hexadecimal value 1A, which will display the hexadecimal result. [1] [X,??,T](A) [EXE] Displayed Result: 1B 5. Specify binary as the desired number base. [F3](Disp) [3](>Bin) [EXE] Displayed Result: 11011
**Xor Operation:** 19 Xor 1A 1. On the RUN Mode SETUP screen, specify hexadecimal for the MODE setting. [CTRL] [F3](SETUP) [F3](Hex) [ESC] 2. Input the hexadecimal value 19. [1] [9] 3. Input the logical operator [F2](LOGIC) [5](Xor) 4. Input the hexadecimal value 1A, which will display the hexadecimal result. [1] [X,??,T](A) [EXE] Displayed Result: 3?? 5. Specify binary as the desired number base. [F3](DISP) [3](>BIN) [EXE] Displayed Result: 11 ^Top **How do you take the 5th root of a number (or any root higher than 3)?** FX-9750/CFX-9850/FX-9860 series To take the fifth root, press [5] [SHIFT] [^] and then the number that you want to take the root of. For example, to find the fifth root of -243, press: [5] [SHIFT] [^] [(-)] [2] [4] [3] [EXE] The answer shows as -3. ^Top **How can I put a matrix into reduced row echelon form on FX9750G / CFX9850G series?** Use the program ROWREDA. This is built into the FX-9750G Plus and CFX-9850GB Plus, and can be loaded using the following procedure: 1. Press [MENU]. 2. Select PRGM by moving the highlight to PRGM and pressing [EXE]. Alternatively you can press the [log] key (which is the key for B). 3. Press [F6]. 4. Press [F5] (LOAD). 5. Cursor down to "U.S.A" and then press [EXE]. 6. Press the cursor down several times until ROWREDA is highlighted, then press [EXE]. For other calculators in this series that do not have the program built-in, it can be downloaded from the following page: http://www.casioeducation.com/downloads/4AB30298-DA84-4D3A-82A8-9088C88C19BF To use the program, go to MAT mode and store the matrix in Matrix A. After executing the program, the result will be in Matrix R. ^Top **How do I generate random numbers on FX97xx / FX98xx / CFX98xx calculators?** The random number generator function is called Ran# and can be accessed in RUN mode by pressing:
**[OPTN] [F6] [F3] (PROB) [F4] (Ran#)** Note: In the paragraph above, the **bold text** indicates keypresses, while the aqua-colored text represents the menus that appear at the bottom of the calculator screen. This also assumes there are no menus on the bottom of the screen when you begin. If PROB is already on the screen, then the [F6] key is not necessary, just press [F3] then [F4] at this point. The Ran# function generates a random decimal number between 0 and 1. If you need to generate a number with a higher range, then there may be extra steps involved. For example, to choose a random number between 0 and 100, you would enter:
**Ran#×100** Let's say you want to simulate a dice roll, where you get an integer between 1 and 6. Your first step would be to do:
**Ran#×6** This will give you a random decimal number between 0 and 6. But we need an integer, not a decimal. To make it an integer, you would change this to:
**Int(Ran#×6)** This now gives you an integer between 0 and 5. We just need to add 1 to the result.
**Int(Ran#×6)+1** The result should be an integer between 1 and 6. ^Top **How do I do exponential regression in the form y=ab^x?** Casio graphing calculators do exponential regression in the form y=a×e^bx. Some other calculators (for example, Texas Instruments) use y=ab^x instead. Some information on what to do can be seen here: http://www.casiocalc.org/?showtopic=3234 Start by performing the exponential regression on the Casio calculator. You will be given values for a and b that fit into y=a×e^bx. I recommend that you write down these values. The b value in y=ab^x is different than the b value in y=a×e^bx. To avoid confusion, the Web link mentioned above uses an uppercase B for the y=aB^x equation. We will do the same for the remainder of this procedure. Let us examine the equation: y=a×e^bx We know that e^(bx) is equal to (e^b)^x because of one of the rules of powers. Therefore, this equation can be rewritten as: y=a×(e^b)^x We are looking for the form: y=a×B^x By comparing the last two equations, we can see that B=e^b. Therefore, to find the B value for y=a×B^x, simply calculate e^b using the b value you got from y=a×e^bx earlier. On the FX-9750G/CFX-9850G/FX-9860G series, this can be done if you go to RUN, press [SHIFT] [ln], then enter your b value, then press [EXE]. ^Top **What probes will work with my EA100 or EA200?** Probes are available from Casio, Saltire and Vernier. Links to these companies are at: http://world.casio.com/edu/product/ea200/ ^Top **What software is needed to use the EA200 EA100 Data Collector?** The CFX9850 has software included to use the Casio probes. For other data collecting, the user may need to create a program or find one online. In addition, software for the FX2.0 models is found at: http://world.casio.com/edu/resources/add_in/detail/e_con2.html For the ClassPad 300: http://classpad.net/members/os_addin/index.html Software is coming soon for the FX9860. ^Top **Vista Compatibility** Below is a link describing the Capatibility issues with our Calculators http://world.casio.com/calc/support/en/info/soft_vista.html User Account Control (UAC) http://world.casio.com/en/win_vista/vista_uac.html Help Problems http://world.casio.com/en/win_vista/vista_help.html Avoiding Installation Problems http://world.casio.com/en/win_vista/vista_xpsp2.html Starting Up with Administrator Privileges http://world.casio.com/en/win_vista/vista_admin.html Windows can't verify the publisher of this driver software" Message http://world.casio.com/en/win_vista/vista_unsigned.html ^Top **After performing a sequence of calculations in FX115MS, when I attempt to store the answer in memory, the value changes to something else altogether.** If you perform a simple two-step operation, then after pressing the [=] key, you can press [SHIFT] [STO] [M] to store the answer into memory. Example: 9-2, press [=] and the answer is 7, then press [SHIFT] [STO] [M] and 7 is stored in memory. If you perform additional calculations after that (using the answer from the previous calculation), then the calculator will begin using answer memory (as seen by Ans on the display). When you are finished with the calculation, and press [SHIFT] [STO] [M], it will repeat the last calcuation and store its result into memory instead. Example: 3×3, press [=] and the answer is 9. Then press [-] [2] [=] to subtract 2 from that answer, and the new answer is 7. Then press [SHIFT] [STO] [M], and 5 is stored in memory (because it subtracted 2 from the 7 that was in answer memory). If you perform multiple calculations in sequence and have an answer that you want to store in memory, press [Ans] followed by [SHIFT] [STO] [M]. This may also apply to other calculators in the FX-##MS series, such as FX-991MS. ^Top **What are the various modes for (using the [MODE] key)?** The [MODE] key can be used to select the modes described below.
**Important!** The following is a general explanation of Scientific Calculator modes. Note that your calculator may not include all of the modes described here.
**1) Calculation Modes** Before performing a calculation, you first need to select the appropriate calculation mode.
**COMP:** Basic arithmetric calculations (arithmetic operations, trigonometric functions, etc.)
**COMPLEX:** Complex number calculations
**SD:** Single-variable statistical calculations (sample standard deviation, etc.)
**LR or REG:** Paired-variable statistical calculations (linear regression statistical calculations, etc.)
**BASE** or **BASE-n:** Binary, octal, decimal, hexadecimal number system calculations
**MAT:** Matrix calculations (determinants, etc.)
**VCT:** Vector calculations
**EQU:** nth degree equations, simultaneous equations
**2) Display Settings** Use these settings to control how calculation results are displayed. Note that changing the Fix and Sci settings does not affect internal calculation results.
**Norm:** Exponential display format and cancels the currently configured Fix and Sci settings.
**Fix:** Specifies a fixed number of digits to the right of the decimal place.
**Sci:** Specifies a fixed number of significant digits.
**3) Angle Unit Setting** (90?·??/2 radians=100 grads)
**Deg:** Degrees
**Rad:** Radians
**Gra:** Grads
**4) Engineering Mode** Use this mode when you want to input and perform calculations using engineering symbols. Displayed Result: 13?·1?·9?·(13 hours 51 minutes and 39 seconds) Within any category, the way to get out of the selected mode is to select another mode within that particular category. For example, to get out of SD mode, you can select either COMP, LR, or BASE-n. ^Top **Can our scientific calculators convert between degrees, radians, and grads?** No, those conversions need to be done manually. ^Top **What do the letters V.P.A.M. stand for?** V.P.A.M. stands for "Visually Perfect Algebraic Method." It is a system that makes it possible for the calculator to display expressions and for you to input expressions the way they are written on paper. With a model not equipped with V.P.A.M., for example, you would input the expression sin 90?·using the key operation: [9] [0] [sin] [=]. With a V.P.A.M. calculator, you would input [sin] [9] [0] [=]. ^Top **What do the letters S-V.P.A.M. stand for?** S-V.P.A.M. stands for "Super Visually Perfect Algebraic Method." With this method, you get the same V.P.A.M. ability to input mathematical expressions as they are written, along with the ability to view expressions and results at the same time. The display of S-V.P.A.M. shows two lines at a time. You can recall an expression with the Replay feature, make any changes that you want, and then recalculate. ^Top **Logarithm of a number to an arbitrary base.** Logarithms in base 10 (common logarithm) and e (natural logarithm) can be calculated directly using the keyboard. However if someone wants to calculate a logarithm in any other base, he has to convert this logarithm to a logarithm in base 10 using the following equation log_{b}a = log a / log b (log a is the log of a in base 10, and, log b is the log of b in base 10) The correctness or validity of this equation can be verified simply. In this way then it is possible to calculate the logarithm of a number to any base with Casio's scientific/graphical calculators. With the following model, you can specify base b using the syntax "(log b,a)". The models: fx-82ES ^Top **What is the calculation priority sequence that I need to keep in mind when performing a calculation?** Calculations are performed in accordance with a specific "calculation priority sequence". For example, multiplication and division operations are executed before addition and subtraction operations. Also, each calculator model performs calculations in accordance with a preset calculation priority sequence. Check the applicable section in your calculator's user's guide for information about the calculation priority sequence it uses for calculations. (Chapters: Calculation Priority Sequence; Order of Operations; Order of Operations and Levels)
**Example:** -4^2 result -16 2+3*4 result 14 In the first example, 4 is squared and then the result is made a negative value. This is because the power operation has a higher priority than the negative sign. In the second example, the 3*4 operation is performed first, and then the result is added to 2. This is because multiplication and division has a higher calculation priority than addition and subtraction.
**Note** Expressions enclosed in parentheses are given top priority. Parentheses can be nested inside each other. In this case, the expression inside the innermost set of parentheses is given top priority.
**Examples:** (-4)^2 Result 16 (2+3)*4 Result 20 ^Top **Is it possible to accomplish time calculations with scientific calculators?** Yes, it is possible. The sexagesimal base number is based on the number 60. This base number is used for time and angle measurement. For time measures where 1 hour equals 60 minutes and 1 minute=60 seconds, Casio scientific calculators can carry out time calculations as well as angle calculations. The following are calculations using the fx-115MS. Operation on other scientific calculator models (fx-991MS, fx-115WA, fx-991WA, fx-3650P, fx-82ES, etc.) is similar.
**Examples:** To convert the decimal value 2.258 to a sexagesimal value Key Operation: [2] [.] [2] [5] [8] [=] [°'"] Displayed Result: 2°5°8.8° (2 hours 15 minutes and 28.8 seconds)
**Time calculation with sexagesimal values:** 5 hours 34 minutes and 48 seconds are to be added to 8 hours 16 minutes and 51 seconds. Key Operation: [5] [°'"] [3] [4] [°'"] [4] [8] [°'"] [+] [8] [°'"] [1] [6] [°'"] [5] [1] [°'"] [=] Displayed Result: 13°1°9° (13 hours 51 minutes and 39 seconds)
**The result can be converted into decimal value.** Key Operation [°'"] Displayed Result: 13.86083333 ^Top **How do I enter hexadecimal numbers on FX115MS?** First, you need to put the calculator in BASE mode: [AC] [MODE] [MODE] [3] You should now see 0 with a small letter to the right, showing which base you are in. You will see d for decimal, H for hexadecimal, b for binary, or o for octal. You can switch bases using the [DEC], [HEX], [BIN], or [OCT] keys. These are labeled in green above the appropriate key, so the [HEX] key is actually the [^] key. You do not need to press [SHIFT] or any other key first. When entering hexadecimal numbers, you can use the A through F keys that are labeled in red, but do __not__ press [ALPHA] to enter a hexadecimal digit. So, to enter the hex digit A, simply press the [(-)] key. To enter the hex digit F, simply press the [tan] key. The letter will appear in **bold** so that you know it is a hex digit and not a variable. If you press [ALPHA] first, then the letter will not be bolded, and will be treated simply as a variable. For more information, please see pages E-9 through E-11 of the FX-115MS User's Guide 2, which can be downloaded in PDF (Adobe Acrobat) format at the following link: http://ftp.casio.co.jp/pub/world_manual/edu/en/fx100MS_115MS_E.pdf ^Top **When solving mathematical expressions on FX115MS, it does not allow me to input a value for a certain variable. Using the example on page E-5 of User's Guide 2, I am not prompted for B.** When you are entering the equation, the equals sign you are using is the one that is on the [CALC] key near the upper-left corner of the keypad, not the [=] key in the lower-right corner. Anything you press immediately after the [ALPHA] key will give you whatever is in red print above the key. So, when entering the example on page E-5 of User's Guide 2, you would begin by entering: [ALPHA] [B] [ALPHA] [CALC] [ALPHA] [A] [×] [ALPHA] [C] [-] etc. After you press [SHIFT] [SOLVE], the equals sign you need to press when specifying values for the variables will be the [=] key in the lower-right corner. ^Top **How do I return my FX-115W to its default modes?** If the calculation results are not what you expect or if an error occurs, then perform the following steps: 1. Press [MODE] [1] 2. Press [MODE] [MODE] [MODE] [1] 3. Press [MODE] [MODE] [MODE] [MODE] [3] [1] This is found on page E-31 of the manual. Step 3 above would get out of scientific notation mode. ^Top **My FX115ES or FX300ES gives a fraction as an answer. How do I switch to decimal?** Turn on the calculator, then press [SHIFT] [SET UP]. This should display a menu on your screen with several options. The first two are what we are interested in. Number 1 is MthIO, and number 2 is LineIO. The default for the calculator is MthIO. While it is using MthIO, if you do a calculation that results in a fraction, the answer will be displayed as a fraction. Try [3] [÷] [4] [=] and you will get the fraction 3/4 as an answer. If you press the [S<->D] key, then the result will be converted to decimal form (0.75). Still in MthIO, if you press [SHIFT] before [=] then you should get a decimal answer immediately. Press [3] [÷] [4] [SHIFT] [=] and the answer is 0.75. If you would rather not press [SHIFT] before [=] every time you do a calculation (or use the [S<->D] key to convert the answer), then switch to LineIO format. When you do this, the answer should immediately appear as a decimal when you press the [=] key. ^Top **Why do I get incorrect answers with problems involving mixed fractions on FX115ES/FX300ES?** Be sure that you are entering the mixed fraction properly. Generally, when entering fractions, you'll want to use the fraction key which is located underneath the [CALC] key and above the [(-)] key. Pressing this key allows you to enter a numerator and then a denominator. For mixed fractions, enter [SHIFT] followed by the fraction key. You can then enter three parts: the integer portion, then the numerator of the fraction, then the denominator of the fraction. One mistake that some people may make is to press the fraction key (without pressing [SHIFT]), then cursor left to enter the integer, then cursor right to enter the numerator and denominator. What happens is that is treated as the integer multiplied by the fraction, rather than the integer added to the fraction. For example, a user may enter 1 1/2 as: [Fraction] [cursor left] [1] [cursor right] [1] [cursor down] [2] [cursor right] This is incorrect, and is treated as "1 × 1/2" giving a result of 1/2. The correct way to enter 1 1/2 is: [SHIFT] [Fraction] [1] [cursor right] [1] [cursor down] [2] [cursor right] For more information see page E-21 of the FX-115ES manual, or page E-20 of the FX-300ES manual. ^Top **How is the ClassPad different from a conventional graphing calculator?** The ClassPad is not a graphing calculator but a next-generation math education tool. With the ClassPad students can not only manipulate complex mathematical expressions but also grasp the relationship between mathematically different fields (for example, vector and geometry) and learn how to think along the lines of mathematics easily. The ClassPad is different from a conventional graphing calculator in capabilities in that: * The ClassPad adopts a pen touch operation for inputting. * The ClassPad is able to input/output a natural mathematical expression. (the program mode is excluded) * For example, when you calculate using the ClassPad, you can input a proper fraction, limit, differentiation, integral, and matrix in a mathematical expression in the textbook. * You can also output the calculation result in a natural mathematical expression. * The four application software programs have been added in addition to the capabilities of a conventional graphing calculator as follows. eActivity Geometry Presentation 3 Dimensional Graphing ^Top **Can I operate the ClassPad in the same way as a conventional graphing calculator?** Unlike a conventional graphing calculator, the ClassPad is operated with a pen touch operation. For example, it is necessary to select a menu or input a function or variable from the soft keyboard and Icon panel with the pen touch operation. (You can display and turn ON/OFF the soft keyboard from the keypad.) You can also input a figure, decimal point, variables x, y, z, symbols +, -, ×, ÷, =, comma, (),^ from the keypad of the ClassPad. ^Top **Can the ClassPad use programs that were created for other Casio graphing calculator models?** No, programs for other Casio graphing calculators will not work with the ClassPad. ^Top **Can I connect the ClassPad to a personal computer?** Yes. You can transmit and receive data, and transfer images using the ClassPad Manager software, which is on the CD-ROM that comes with the ClassPad, along with the included SB-300 USB cable or the optional SB-305 serial cable. You can transfer the programs and materials (e-Activities) of the ClassPad made using a personal computer/ClassPad to the ClassPad using ClassPad Manager. ^Top **Can I connect the ClassPad to the Data Analyzer EA-200?** Yes. The Data Analyzer EA-200 is a digital device that makes it possible for you to sample data connected with everyday natural phenomena. ^Top **How large is the memory capacity of the ClassPad 300?** 500 KB of RAM and 4MB of flash memory are installed in the ClassPad 300. ^Top **How can I save the battery power of my ClassPad?** You can save the battery power of your ClassPad doing either or both of the following procedures.
**1.** Your ClassPad has a "resume" feature that remembers its status when you turn it off , and restores the same status the next time you turn the ClassPad on. Resume feature operation requires power to operate, which means that some power continues to be consumed even when the ClassPad is turned off. The power saving mode lets you choose how long the resume feature to be operated after you turn off the ClassPad unit. You can specify 1 day, 1 week or 1 month. After the time limit you specified is reached, the resume feature is deactivated The following table (user's guide chapter 14-6) describes the power saving mode options that are available: **To do this:** | **Select this power saving mode option:** | Turn off the power saving mode (unlimited resume time) | Off | Limit resume operation to 1 day after power down | 1 day | Limit resume operation to 1 week after power down | 1 week | Limit resume operation to 1 month after power down | 1 month | **Note:** "Off" is the default setting. It means the maximal battery power consumption.
**Tip:** To save the battery power choose the shortest resume time (one day).
**2.** During the USB connection with the PC, the ClassPad 300 will be powered from the USB port of the PC. A physical connection with a running PC is enough to power the ClassPad. A Software connection via ClassPad Manager or other applications is not necessary.
**Tip:** To save the battery power connect the ClassPad to a running PC if possible.^Top **When trying to print a program listing, only the first page is printed. How can I print the complete program?** The Program application will only print the first page of a program. To print the entire program, you need to use eActivity. To print the entire program: 1. Open the program and select Edit/Select All and then Edit/Copy. 2. Open the eActivity application and select File/New. 3. Next, select Edit/Paste. 4. With the program showing in eActivity, right click on the manager and select Print. ^Top |